Please find below my view;
typical items that should be recorded on welding procedure specification are; procedure number, process, consumable size, consumable baking requirement - if applicable, parent material grade and spec, thickness range and diameter range and etc. I say "should" in here instead of "shall" which is mean recommended.
Section IX QW 451 ASME code specifies that the test coupon T (not "t") qualified for 2T. Your WPS with test coupon 9 mm can cover up to 18 mm. However, you should consider about this thing; material having thickness exceeds 19,1 mm needs PWHT in several occasions, hence a new procedure shall be qualified.
A good procedure describe all essential, supplementary essential and non essential variable, than only put essential variable.
With kind regards
--Dear friends,
I have few question related to WPS, I am trying to check whether it complies to XI though I am not CSWIP certified or a welding engineer, appreciate if you could provide some information to me on the following
1- Is it mandatory to mention the qualified weld metal thickness on WPS, if yes what should be qualified weld metal thickness for a test coupon 9 mm thick and welded by GMAW and SAW process , should it be 2t as per table QW 451.1? How to find '' t'' before doping welding?
2- Is it mandatory to mention the lot number of flux& wire on the WPS, if No could you please provide me reason?
3- My understanding is if the welding is single pass than interpass temperature does not come into picture is it true?
Thanks & Regards
Syed Moin
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